Ordering number : ENN6489 Monolithic Linear IC LA5645M Constant-Voltage/Constant-Current Control IC Overview Package Dimensions The LA5645M is a constant-voltage/constant-current control IC that incorporates low-voltage operational amplifiers and a high-precision reference voltage circuit (VREF = 1.5 V ±1.0%). This device is optimal for use as a secondary side controller in battery chargers, switching regulators, and similar products. unit: mm 3032B-MFP8 8 0.625 [LA5645M] 5 4.4 1 4 1.8max Operating supply voltage: 2.5 to 14 V High-precision reference voltage: 1.5 V ±1.0% PC pin current: 60 mA (max) Current drain: 3 mA (max) Input offset voltage: 2 mV (max) 0.15 1.5 5.1 0.1 • • • • • 5.15 6.4 Features 0.35 1.27 0.645 SANYO: MFP8 Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Supply voltage VCC max 14.5 Differential input voltage VID max 14.5 PC pin current IPC max 60 Allowable power dissipation Pd max Unit V V mA Independent IC 300 mW Mounted on the specified printed circuit board* 800 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –50 to +150 °C Ratings Unit Note: * Specified printed circuit board: 76.1 × 114.3 × 1.6 mm3, glass epoxy board. Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Symbol Vopr Conditions 2.5 to 14 V Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 83000RM (OT) No. 6489-1/5 LA5645M Pd max — Ta Allowable power dissipation, Pdmax — W 1.0 Board size: 76.1 × 114.3 × 1.6 mm3 Mounted on the specified Board material: glass epoxy printed circuit board 0.8 0.6 0.41 0.4 Independent IC 0.3 0.2 0.16 0.0 –20 0 20 40 60 80 100 Ambient temperature, Ta — °C Electrical Characteristics at Ta = 25°C, VCC = 5 V Parameter Symbol Current drain ICC Ratings Conditions min typ IPC = OFF 1 Leakage current IPC LEAK VCC = VPC = 14 V Saturation voltage VPC (sat) IPC = 50 mA Reference voltage VREF IREF = 0 mA 1485 3 mA 100 µA 0.5 0.7 1500 1515 mV 30 mV mV ∆VREF/∆IREF IREF = 0 to 5 mA Reference voltage regulation Unit max V [Amplifier Block] (Characteristics common to both channels A and B) Input offset voltage VIO 0.5 2 Input offset current IIO 5 50 nA Input bias current IB 80 250 nA Voltage gain AV Common-mode input voltage range Open loop gain (design guarantee*) 80 VICM 0 dB VCC – 2 V Slew rate SR Design guarantee* 0.8 V/µs Gain-bandwidth product GB Design guarantee* 2 MHz Note: * Design guarantee value. These parameters are not measured. Pin Assignment 8 VCC PC 1 – A + A–INPUT 2 VREF + B 7 VREF – A+INPUT 3 6 B–INPUT GND 4 5 B+INPUT A13183 No. 6489-2/5 LA5645M ICC — Ta 1200 ICC — VCC 1200 VCC = 5 V Ta = 25 °C Current drain, ICC — µA Current drain, ICC — µA 1000 1000 800 600 800 600 400 200 400 –50 0 50 100 0 0 150 5 VREF — IREF 2.0 10 15 Supply voltage, VCC — °C Ambient temperature, Ta — °C VREF — VCC 1.55 Ta = 25 °C Reference voltage, VREF — V Reference voltage, VREF — V VCC = 5 V Ta = 25 °C 1.8 1.6 1.4 1.2 1.50 1.45 1.40 1.35 1.30 1.0 0 10 20 1.25 0 30 5 Pin 7 output current, IREF — mA VIO — Ta 3 10 15 Supply voltage, VCC — V VREF — Ta 1.500 1.498 2 1 Channel A 0 offset Channel B offset –1 –2 –3 –50 VCC = 5 V Reference voltage, VREF — V Input offset voltage, VIO — mV VCC = 5 V 1.496 1.494 1.492 1.490 1.488 0 50 100 Ambient temperature, Ta — °C 150 1.486 –50 0 50 100 150 Ambient temperature, Ta — °C No. 6489-3/5 LA5645M VPC(sat) — IPC VCC = 5 V Ta = 25 °C 250 200 150 100 50 0 0 20 40 60 VCC = 5 V IPC = 50 mA 500 400 300 200 100 0 –50 80 VCC = 5 V 6 Input offset current, IIO — nA Input bias current, IB — nA IIO — Ta 8 VCC = 5 V 90 80 70 Cha 60 Cha nne lB nnel A 50 40 30 4 Channel A 2 0 Channel B –2 –4 –6 20 –50 0 50 100 –8 –50 150 0 Pha 150 180 se 40 Gain 20 0 0 VCC = 5 V Ta = 25 °C Channel B Amp External resistor ratio 100 kΩ/1 kΩ 80 Voltage gain, VG — dB Voltage gain, VG — dB 60 100 Phase, ø — degrees VCC = 5 V Ta = 25 °C Channel A Amp External resistor ratio 100 kΩ/1 kΩ 80 100 Channel B Voltage Gain and Phase vs. Frequency Channel A Voltage Gain and Phase vs. Frequency 100 50 Ambient temperature, Ta — °C Ambient temperature, Ta — °C 60 Pha 180 se 40 Gain 20 0 0 –20 –20 –40 1k 100 Ambient temperature, Ta — °C IB — Ta 100 50 0 Pin PC current, IPC — mA Phase, ø — degrees 300 VPC(sat) — Ta 600 Output saturation voltage, VPC(sat) — mV Output saturation voltage, VPC(sat) — mV 350 2 3 5 7 10k 2 3 5 7100k 2 3 5 7 1M Frequency, f — Hz 2 –180 3 5 7 10M –40 1k 2 3 5 7 10k 2 3 5 7100k 2 3 5 7 1M 2 –180 3 5 7 10M Frequency, f — Hz No. 6489-4/5 LA5645M Sample Application Circuit + PC (PHOTO COUPLER) R1 R3 R5 8 VI CONTROL IC PC R2 RSC 2 – 3 + A 1 + 5 – 6 B VREF=1.5V±1% R4 4 Battery 7 R6 LA5645M A13184 Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer’s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer’s products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification” for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of August, 2000. Specifications and information herein are subject to change without notice. PS No. 6489-5/5